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Cryptoblastus
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Cryptoblastus, collected from the Burlington Limestone, Iowa
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Animals & Nature

Cryptoblastus

fossil echinoderm genus
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Cryptoblastus, collected from the Burlington Limestone, Iowa
Cryptoblastus
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Category: Animals & Nature
Related Topics:
Paleozoic Era
fossil
Mississippian Subperiod
blastoid

Cryptoblastus, extinct genus of blastoids, a primitive group of echinoderms related to the modern sea lilies, found as fossils in Early Carboniferous marine rocks (the Early Carboniferous Period occurred from 360 to 320 million years ago).